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Novel hexagonal structure and ultrahigh strength of magnesium solid solution in the Mg-Zn-Y system
http://hdl.handle.net/2298/10953
http://hdl.handle.net/2298/109531f0e1368-aab5-40ec-853d-4c4cc73e281d
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
JMR-16.pdf (623.8 kB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
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| 公開日 | 2009-02-25 | |||||
| タイトル | ||||||
| タイトル | Novel hexagonal structure and ultrahigh strength of magnesium solid solution in the Mg-Zn-Y system | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ | journal article | |||||
| 著者 |
Inoue, Akihisa
× Inoue, Akihisa× 河村, 能人× Matsushita, Mitsuhide× Hayashi, Kentaro× Koike, Junichi |
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| 別言語の著者 |
河村, 能人
× 河村, 能人 |
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| 内容記述 | ||||||
| 内容記述 | A magnesium (Mg) solid solution with a long periodic hexagonal structure was found in a Mg97Zn1Y2 (at.%) alloy in a bulk form prepared by warm extrusion of atomized powders at 573 K. The novel structure has an ABACAB-type six layered packing with lattice parameters of a = 0.322 nm and c = 3 ~ 0.521 nm. The Mg solid solution has fine grain sizes of 100 to 150 nm and contains 0.78 at.% Zn and 1.82 at.% Y. In addition, cubic Mg24Y5 particles with a size of about 7 nm are dispersed at small volume fractions of less than 10% in the Mg matrix. The specific density (ƒÏ) of the extruded bulk Mg-Zn-Y alloy was 1.84 Mg/m3. The tensile yield strength (ƒÐy) and elongation (ƒÂ) are 610 MPa and 5%, respectively, at room temperature, and the specific yield strength defined by the ratio of ƒÐy to ƒÏ is as high as 3.3 ~ 105 Nm/kg. High ƒÐy values exceeding 400 MPa are also maintained at temperatures up to 473 K. It is noticed that the ƒÐy levels are 2.5 to 5 times higher than those for conventional high-strength type Mg-based alloys. The Mg-based alloy also exhibits a high-strain-rate superplasticity with large ƒÂ of 700 to 800% at high strain rates of 0.1 to 0.2 s-1 and 623 K. The excellent mechanical properties are due to the combination of the fine grain size, new long periodic hexagonal solid solution containing Y and Zn, and dispersion of fine Mg24Y5 particles. The new Mg-based alloy is expected to be used in many fields. | |||||
| 書誌情報 |
Journal of Materials Research 巻 16, 号 7, p. 1894-1900, 発行年 2001-07 |
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| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AA10664454 | |||||
| DOI | ||||||
| 関連タイプ | isIdenticalTo | |||||
| 関連識別子 | 10.1557/JMR.2001.0260 | |||||
| 権利 | ||||||
| 権利情報 | © 2001 Materials Research Society | |||||
| 情報源(ISSN) | ||||||
| 関連名称 | 08842914 | |||||
| フォーマット | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | application/pdf | |||||
| 形態 | ||||||
| 623753 bytes | ||||||
| 著者版フラグ | ||||||
| 出版タイプ | VoR | |||||
| 日本十進分類法 | ||||||
| 主題Scheme | NDC | |||||
| 主題 | 501 | |||||
| 出版者 | ||||||
| 出版者 | Materials Research Society | |||||
| 資源タイプ | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | 論文(Article) | |||||
| 資源タイプ・ローカル | ||||||
| 雑誌掲載論文 | ||||||
| 資源タイプ・NII | ||||||
| Journal Article | ||||||
| 資源タイプ・DCMI | ||||||
| text | ||||||
| 資源タイプ・ローカル表示コード | ||||||
| 01 | ||||||
| 著作の一部 | ||||||
| 関連名称 | http://www.mrs.org/s_mrs/sec_jmr.asp?CID=30&DID=48 | |||||
